1KSIZE(9)                  Memory Management in Linux                  KSIZE(9)
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NAME

6       ksize - get the actual amount of memory allocated for a given object
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SYNOPSIS

9       size_t ksize(const void * objp);
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ARGUMENTS

12       objp
13           Pointer to the object
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DESCRIPTION

16       kmalloc may internally round up allocations and return more memory than
17       requested.  ksize can be used to determine the actual amount of memory
18       allocated. The caller may use this additional memory, even though a
19       smaller amount of memory was initially specified with the kmalloc call.
20       The caller must guarantee that objp points to a valid object previously
21       allocated with either kmalloc or kmem_cache_alloc. The object must not
22       be freed during the duration of the call.
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25Kernel Hackers Manual 3.10         June 2019                          KSIZE(9)
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